ahmedabu98 commented on code in PR #32529:
URL: https://github.com/apache/beam/pull/32529#discussion_r1775149736
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sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/providers/BigQueryStorageWriteApiSchemaTransformProvider.java:
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@@ -257,6 +262,13 @@ public static Builder builder() {
@Nullable
public abstract ErrorHandling getErrorHandling();
+ @SchemaFieldDescription(
+ "This option enables the use of BigQuery CDC functionality. It expects
a Row schema"
+ + " wrapping the record to be inserted and adding the CDC info
similar to:"
+ + " {cdc_info: {mutation_type:\"...\",
change_sequence_number:\"...\"}, record: {...}}")
+ @Nullable
+ public abstract List<String> getUseCdcWritesWithPrimaryKey();
Review Comment:
The only time user needs to specify a primary key is when they expect us to
create the table (ie.
[CREATE_IF_NEEDED](https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/BigQueryIO.java#L3476-L3478)).
If the table already exists, they should be able to use cdc writes without
providing a primary key.
Might be a good idea to decouple "use cdc writes" and "primary key" into two
different options
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